Paper Titles

Tensile and Fatigue Properties of Friction Stir Processed NiAl Bronze
p.3751

Microstructure of Friction-Stir-Welded High-Nitrogen Stainless Steel
p.3757

Friction Stir Welding of Precipitation Hardened Ni Based Alloys
p.3763

Control of Grain Size and Texture in Al Alloys Utilizing Friction Stir Processing
p.3769

Enhancement of Formability in Magnesium Alloy AZ31B via Friction Stir Processing
p.3775

Evaluation of Post-Weld Heat Treatments to Restore the Corrosion Resistance of Friction Stir Welded Aluminum Alloy 7075-T73 vs. 7075-T6
p.3781

Relation between Strength and Microstructure in Friction Stir Welded Joints of A383 and A5052 Aluminum Alloys
p.3789

Residual Strain Measurements in a Friction-Stir Processed AZ31B Magnesium Alloy Using Neutron Diffraction
p.3795

Experimental Thermal Analysis of Friction Stir Processing
p.3801

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Enhancement of Formability in Magnesium Alloy...

Enhancement of Formability in Magnesium Alloy AZ31B via Friction Stir Processing

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Abstract:

Mg alloy has a poor formability at room temperature because of lack of the active slip systems, but the grain refinement improves its ductility. Friction stir processing (FSP) can create homogeneous microstructure consisting of fine grains in Mg alloys, thus it would be expected that FSP enhances the formability of Mg alloys. In this study, multi-pass FSP was applied to Mg alloy AZ31B, and then formability of FSPed alloy was evaluated. Multi-pass FSP produced the fine recrystallized grains in Mg alloy. The stir zone exhibited larger fracture limit major strains than the base material under uniaxial tension and plane strain deformation, and these values increased with decreasing grain size. The stir zone having grain size of 2.9 μm showed the fracture limit major strains which are roughly as same as those of an annealed pure Al. The present study suggests that FSP is an effective method to enhance the formability of Mg alloys.

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

3775-3780

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.3775

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Online since:

March 2007

Authors:

Yutaka S. Sato, A. Sasaki, A. Sugimoto, A. Honda, Hiroyuki Kokawa

Keywords:

Formability, Friction Stir Processing (FSP), Magnesium Alloy, Microstructure

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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